EP 1257995 A1 20021120 - METHOD FOR COMPENSATING A PERTURBED CAPACITIVE CIRCUIT AND APPLICATION TO MATRIX DISPLAY DEVICE
Title (en)
METHOD FOR COMPENSATING A PERTURBED CAPACITIVE CIRCUIT AND APPLICATION TO MATRIX DISPLAY DEVICE
Title (de)
VERFAHREN ZUR KOMPENSATION EINES KAPAZITIV GESTÖRTEN SCHALTKREISES UND ANWENDUNG BEI MATRIXBILDSCHIRMEN
Title (fr)
PROCEDE DE COMPENSATION D'UN CIRCUIT CAPACITIF PERTURBE ET APPLICATION AUX ECRANS DE VISUALISATION MATRICIELS
Publication
Application
Priority
- FR 0100539 W 20010223
- FR 0002410 A 20000225
Abstract (en)
[origin: FR2805650A1] A resistor (Rm) is connected into the counter electrode of an active matrix liquid crystal display to measure the current whose integral is proportional to the line voltage variation during switching. An operational amplifier (IC1) circuit with a negative terminal resistor (Rint) and a capacitor (Cint) is connected to the counter electrode resistor (Rm) and produces a compensating voltage which is applied through a compensating capacitor (Ccomp).
IPC 1-7
IPC 8 full level
G02F 1/133 (2006.01); G09G 3/20 (2006.01); G09G 3/36 (2006.01); G09G 3/32 (2016.01); G09G 3/3208 (2016.01)
CPC (source: EP KR US)
G09G 3/20 (2013.01 - EP US); G09G 3/36 (2013.01 - KR); G09G 3/3648 (2013.01 - EP US); G09G 3/32 (2013.01 - EP US); G09G 3/3208 (2013.01 - EP US); G09G 3/3655 (2013.01 - EP US); G09G 2300/043 (2013.01 - EP US); G09G 2300/08 (2013.01 - EP US); G09G 2320/0209 (2013.01 - EP US)
Citation (search report)
See references of WO 0165532A1
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
FR 2805650 A1 20010831; FR 2805650 B1 20050805; AU 3748701 A 20010912; DE 60141888 D1 20100602; EP 1257995 A1 20021120; EP 1257995 B1 20100421; JP 2003528341 A 20030924; JP 4789385 B2 20111012; KR 100784747 B1 20071213; KR 20030011072 A 20030206; US 2003030630 A1 20030213; US 6972747 B2 20051206; WO 0165532 A1 20010907
DOCDB simple family (application)
FR 0002410 A 20000225; AU 3748701 A 20010223; DE 60141888 T 20010223; EP 01909889 A 20010223; FR 0100539 W 20010223; JP 2001564141 A 20010223; KR 20027011186 A 20010223; US 20431302 A 20020821